JavaFx之显示一个国际象棋棋盘

[Wenjian96]

我的想法是先设计 白矩形 和黑矩形，然后用循环将矩形填到对应的位置，但无法运行，显示Exception in Application start method，后面还有一大堆，百度也看不懂。
求解：国际象棋棋盘——偶数格为白，奇数格为黑，怎么写？

package demo;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;

public class NumberSix extends Application
{
	@Override
	public void start(Stage primaryStage)
	{
		GridPane pane = new GridPane();
		
		Rectangle rectangle1 = new Rectangle();
		rectangle1.setWidth(10);
		rectangle1.setHeight(10);
		rectangle1.setFill(Color.WHITE);
		
		Rectangle rectangle2 = new Rectangle();
		rectangle2.setWidth(10);
		rectangle2.setHeight(10);
		rectangle2.setFill(Color.BLACK);
		
		for(int i = 0; i < 8; i++)
		{
			for(int j = 0; j < 8; j++)
			{
				if( (i + j) % 2 == 0)
					pane.add(rectangle1, i, j);
				else
					pane.add(rectangle2, i, j);
			}
		}
		Scene scene = new Scene(pane);
		primaryStage.setTitle("14.6");
		primaryStage.setScene(scene);
		primaryStage.show();
	}
	
	public static void main(String[] args)
	{
		Application.launch(args);
	}
}

[天涯若风]

这个是怎么玩的呀

[qq_41707602]

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;


public class Test01 extends Application {

public void start(Stage primaryStage) throws Exception {
GridPane pane=new GridPane();
for (int i=0;i<8;i++){
for (int j=0;j<8;j++){
Rectangle rectangle=new Rectangle(80,80);
rectangle.setFill(Color.BLACK);
if ((i+j)%2==0){
pane.add(rectangle,i,j);
}
}
}
Scene scene=new Scene(pane);
primaryStage.setScene(scene);
primaryStage.show();
}
}

[技养]

意思大概就是你不能重复把同一个引用加到pane中去吧，像下面这样就可以了。 package javaFX; import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.layout.GridPane; import javafx.scene.paint.Color; import javafx.scene.shape.Rectangle; import javafx.stage.Stage; public class Exercise499_14_6 extends Application{ @Override public void start(Stage primaryStage) throws Exception { Rectangle[][] rectangle = new Rectangle[8][8]; GridPane gridPane = new GridPane(); for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { rectangle[i][j] = new Rectangle(i, j, 40, 40); if ((i + j) % 2 == 0) { rectangle[i][j].setFill(Color.WHITE); System.out.println("WHITE:" +rectangle[i][j]); } else { rectangle[i][j].setFill(Color.BLACK); System.out.println("BLACK:" + rectangle[i][j]); } gridPane.add(rectangle[i][j], i, j); } System.out.println(i + "==========" + gridPane); } Scene scene = new Scene(gridPane); primaryStage.setTitle("ShowChessboard"); primaryStage.setScene(scene); primaryStage.show(); } public static void main(String[] args) { Application.launch(args); } }